Verified answer

At the time the Battles of Lexington, Concord, Breeds Hill and the capture of Ticonderoga had taken place. Thousands of British troops had been shipped to the colonies and a full scale war was in progress.

The Declaration of Independence gave the British an opening to settle the issue and achieve peace.The document blames the king, not Parliament or the people of Great Britain. For the people of the colonies it provided some easily understood reasons to the war. Finally is was fully in keeping with the 18th centuries "natural rights" philosophy.

What to say against it? That the abuses didn't happen? That there wasn't a war?

it was a proposition which had the backing of many men with guns.

Therefore it WAS valid. (it was also sound, but that's irrelevant in the face of a rifle)